|
Charging spec from Optima for red top batteries
Charging Info from Optima's website.
All OPTIMAŽ RedTop Batteries
These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep cycle applications.
Recommended charging information:
Alternator:
13.3 to 15.0 volts, no amperage limit.
Battery charger:
13.8 to 15.0 volts, 10 amps maximum, 6-12 hours approximate.
Rapid Recharge:
Maximum voltage 15.6 volts (regulated).
Maximum current: No limit as long as temperature < 50°C (125°F).
Maximum recharge time: Charge until current drops below 1 amp.
Float charge:
13.2 to 13.8 volts, 1 amp maximum current, time indefinite (at lower voltage).
All limits must be strictly adhered to.
What's interesting is they give "10 amps maximum" charging rate for a battery charger than state "no limit" charge rate for "Rapid Recharge". The problem with the no limit charge rate is by the time the battery reaches the 125 degrees F on the outside charging at 100 amps the inside of battery is much hotter and most likely already damaged. I can see why they are having a problem with batteries going bad when they say "no limit" on "rapid Recharging" charging rate.
If you use the 10% rule you will be pretty close to what the manufactures rate as the max charge rate with wet cell batteries. Again non wet cells like AGM and gel cells require a slower rate of charge.
Al
|